Equipment for vertical roll forming of reinforcing belt and reinforcing belt production line

Abstract

The utility model relates to the field of production equipment of pipeline reinforcing belts, and discloses equipment for vertical rolling forming of reinforcing belts and a reinforcing belt production line, and the equipment comprises a sheet extrusion system (70) and at least one rolling composite roller group, the sheet extrusion system can extrude molten plastic sheets (200) on the two sides of a plurality of rows of reinforced wires (100) running side by side respectively, and the rolling composite roller set comprises rollers (671) which are arranged in pairs at intervals to form a rolling gap. And a plurality of rows of reinforcing wires (100) running side by side and the molten plastic sheets (200) on the two sides of the reinforcing wires (100) can be bonded into a whole by rolling the molten plastic sheets, so that the reinforcing belt (300) is formed by rolling. According to the equipment for vertical rolling forming of the reinforcing belt and the reinforcing belt production line, brand new forming and production processes are adopted, various problems caused by the fact that reinforcing wires penetrate through small holes of a core mold and are compounded in the mold can be avoided, and the product quality and high production efficiency of the reinforcing belt are guaranteed.

Description

Technical Field

[0001] The utility model relates to a production device for pipeline reinforcing belts, specifically to a device for vertically roll-forming reinforcing belts. On this basis, the utility model also relates to a reinforcing belt production line including this device. Background Art

[0002] In order to improve the mechanical properties of conveying pipelines, it is usually necessary to use a winding machine to wind reinforcing materials such as steel cord belts, steel fiber belts, and fiber belts onto a plastic core pipe to form a composite pipeline. Among them, in order to ensure better reinforcement effect and composite effect with the plastic core pipe, the reinforcing belts used in the production of such composite pipelines usually include multiple strands of reinforcing filaments (such as steel cord, steel fiber, steel wire) and plastic coated thereon, and are formed into a flat strip shape, so as to be thermally compounded to the outer peripheral surface of the plastic core pipe by means of spiral winding. For related winding machines and production methods of composite pipelines, please refer to Chinese Patent Applications CN115302749A, CN117863532A, etc. previously submitted by the applicant.

[0003] The quality of the reinforcing belt has an important impact on the performance of the composite pipeline using it. In order to avoid bubble defects in the produced reinforcing belt and strengthen the bonding density between the reinforcing filaments and the plastic in the reinforcing belt, Chinese Utility Model Patent CN210850960U provides a reinforcing belt production line and a belt-making die. The belt-making die is provided with a vacuum chamber and a composite chamber. The reinforcing filaments pass through the vacuum chamber and the composite chamber in sequence after being combed and heated, and then are compounded with molten plastic in the composite chamber to form a reinforcing belt. During this process, the reinforcing filaments need to pass through the small holes of the core die of the belt-making die and penetrate into the vacuum chamber and the composite chamber, and are compounded with the molten plastic in the composite chamber, which easily leads to the following problems:

[0004] (1) In application scenarios with anti-corrosion requirements such as marine pipes, the reinforcing filaments need to be anti-corrosion treated. For example, the outer periphery of the steel cord has a galvanized material, and thick galvanized layer steel cord is used as the reinforcing filament. Since the galvanized layer is easily peeled off when passing through the small holes of the core die, after production for a period of time, the peeled galvanized material is not only easy to block the small holes of the core die, even causing running jams, but also affects the composite quality between the reinforcing filaments and the molten plastic and the product quality of the reinforcing belt.

[0005] (2) Since the production speed is very fast (the running speed can reach 20 - 30 m / min), this will cause wear of the small holes of the core die after long-term operation, and then due to the extrusion of the molten plastic, the spacing between the reinforcing filaments during compounding is uneven, which is not conducive to ensuring the product quality of the reinforcing belt.

[0006] (3) The compounding in the compound cavity has high requirements for the tension of the reinforcing filaments and compounding process conditions (such as temperature). In actual production, material blockage is likely to occur, and the tape-making die needs to be cleaned frequently, seriously affecting production efficiency. Summary of the Invention

[0007] An object of the present invention is to overcome at least some of the above-mentioned problems existing in the prior art, and to provide an apparatus for vertically roll-forming a reinforcing tape and a reinforcing tape production line. The apparatus for vertically roll-forming a reinforcing tape and the reinforcing tape production line adopt a brand-new forming and production process, which can avoid various problems caused by the reinforcing filaments passing through the small holes of the core die and in-die compounding, and ensure the product quality of the reinforcing tape and high production efficiency.

[0008] To achieve the above object, on the one hand, the present invention provides an apparatus for vertically roll-forming a reinforcing tape, including:

[0009] A sheet extrusion system, which has an extrusion die and is configured to be able to extrude molten plastic sheets on both sides of multiple columns of reinforcing filaments running side by side; and,

[0010] At least one set of roll-compounding roll groups, each roll-compounding roll group includes rolls arranged in pairs and spaced apart from each other below the extrusion die. A roll-compounding gap is defined between the rolls arranged in pairs for receiving the reinforcing filaments running from top to bottom and the molten plastic sheets extruded on both sides thereof, and can bond the multiple columns of reinforcing filaments running side by side with the molten plastic sheets on both sides thereof into one body by roll-compressing the molten plastic sheets to roll-form a reinforcing tape.

[0011] Preferably, the apparatus for vertically roll-forming a reinforcing tape includes multiple sets of the roll-compounding roll groups arranged along the running direction of the reinforcing filaments. Among them, the roll-compounding gap formed by the roll-compounding roll group located above is equal to or greater than the roll-compounding gap formed by the roll-compounding roll group located below.

[0012] Preferably, it further includes a servo drive mechanism, which is configured to be able to drive at least the rolls in the roll-compounding roll group located at the topmost to rotate.

[0013] Preferably, an air-cooling device is provided between adjacent roll-compounding roll groups, and the air-cooling device is arranged on both sides of the reinforcing tape opposite to the tape surface.

[0014] Preferably, the rolls arranged in pairs are horizontally spaced apart from each other, and their respective roll shafts extend along the horizontal direction, and the reinforcing filaments enter the roll-compounding gap vertically downward.

[0015] Preferably, the roll-compounding roll set further includes a gap adjustment mechanism for adjusting the roll-compressing gap between the rolls.

[0016] Preferably, the gap adjustment mechanism includes a lead screw drive mechanism that is drivingly connected to one or two of the rolls in the roll-compounding roll set.

[0017] Preferably, the sheet extrusion system includes an extruder and an extrusion flow path for connecting the extruder to the extrusion die, and is configured to be able to three-dimensionally adjust the position of the extrusion die.

[0018] Preferably, the die orifice of the extrusion die is formed with a plurality of forming grooves corresponding to multiple columns of the reinforcing filaments running side by side.

[0019] Preferably, along the running direction of the reinforcing filaments, upstream of the first set of the roll-compounding roll set, there is further provided a filament heating device for heating the reinforcing filaments and / or a filament splitting unit for splitting multiple strands of the reinforcing filaments into multiple columns running side by side at a predetermined pitch.

[0020] Preferably, along the running direction of the reinforcing filaments, above the first set of the roll-compounding roll set, there is further provided a filament heat preservation device.

[0021] Preferably, the filament heat preservation device defines a heat preservation channel extending along the running direction of the reinforcing filaments, and the heat preservation channel extends in a gradually expanding manner at one end facing the roll-compounding roll set to form a hot temperature region at a position adjacent to the roll-compounding roll set.

[0022] Preferably, a filament combing device is provided in the hot temperature region, and the reinforcing filaments extend through the comb teeth gaps of the filament combing device.

[0023] Preferably, the reinforcing belt roll-forming equipment further includes a frame and a turning roll mounted on the frame, wherein,

[0024] the reinforcing filaments bypass the turning roll and extend to increase the running height before entering the roll-compounding roll set, and / or,

[0025] the roll-formed reinforcing belt bypasses the turning roll and extends to change the running direction after being output from the roll-compounding roll set.

[0026] A second aspect of the present invention provides a reinforcing belt production line, including:

[0027] a wire pay-off stand for unreeling multiple strands of reinforcing filaments;

[0028] a wire collector for gathering the multiple strands of the unreeled reinforcing filaments into a bundle;

[0029] A wire comb for combing multiple strands of the reinforcing filaments gathered in a bundle into multiple rows arranged side by side;

[0030] The above-mentioned vertical roll forming equipment for reinforcing belts;

[0031] A cooling and shaping device for cooling and shaping the reinforcing belt roll formed by the vertical roll forming equipment for reinforcing belts;

[0032] A drying device for drying the surface of the reinforcing belt;

[0033] A tractor for pulling the reinforcing belt; and,

[0034] A winding machine for winding the reinforcing belt.

[0035] Through the above technical solution, the present utility model cancels the tape-making die and the in-mold composite process for defining the composite cavity, extrudes molten plastic sheets on both sides of multiple rows of reinforcing filaments running side by side through a sheet extrusion system, and uses at least one set of roll composite roller groups to roll the molten plastic sheets so that they are adhesively combined with the reinforcing filaments into one body, so as to form the reinforcing belt by roll forming, having a forming process completely different from the prior art. Since the reinforcing filaments do not need to run through the small holes of the core mold and the traditional forming process of in-mold composite is abandoned, the problems of difficult to ensure product quality and production efficiency existing in the prior art can be avoided. In particular, the vertical roll forming equipment for reinforcing belts of the present utility model is arranged such that the reinforcing filaments run from top to bottom at the position where they are combined with the molten plastic sheets, and the roll composite roller groups are used to roll the molten plastic sheets on both sides to achieve the combination, which is easy to control the tension of the reinforcing filaments and extrude the molten plastic sheets suitable for combination, not only significantly reducing the requirements for the composite process conditions, but also facilitating the guarantee of the product quality of the obtained reinforcing belt. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 is a front view of the upstream equipment in a reinforcing belt production line according to a preferred embodiment of the present utility model, including a wire feeding and combing system and a vertical roll forming equipment, etc.;

[0037] Figure 2 is a front view of the middle and downstream equipment in a reinforcing belt production line according to a preferred embodiment of the present utility model, including a cooling and shaping device, a traction, cutting and winding equipment, etc. for the reinforcing belt. The upstream end on the right side in the figure is connected to Figure 1 the downstream end on the left side in

[0038] Figure 3 is Figure 1 an enlarged view of the partial S1 in

[0039] Figure 4is a top view of the upstream equipment in the production line of the reinforcing belt according to a preferred embodiment of the present invention, corresponding to Figure 1 ;

[0040] Figure 5 is a top view of the middle and downstream equipment in the production line of the reinforcing belt according to a preferred embodiment of the present invention, corresponding to Figure 2 ;

[0041] Figure 6 is Figure 4 an enlarged view of the partial S2 in

[0042] Figure 7 is a process flow chart of the production method of the reinforcing belt according to a preferred embodiment of the present invention.

[0043] Description of the reference numerals

[0044] 101 - wire pay-off stand; 101a - wire spool; 102 - wire collector; 103 - inlet pressure roller; 104 - leveling roller; 105 - wire dividing comb; 106 - vertical roller press forming equipment; 107 - pressure roller device; 108 - water cooling tank; 109 - air drying device; 110 - tractor; 111 - reinforcing belt cutting device; 112 - winding machine;

[0045] 60 - frame; 61a, 61b, 61c - turning roller; 62 - oven; 63 - wire dividing roller; 64 - hot roller; 65 - wire heat preservation device; 65a - heat preservation channel; 66 - wire combing device; 67a, 67b, 67c - roller pressing composite roller group; 671 - roller; 68 - gap adjusting mechanism; 69 - air cooling device; 70 - sheet extrusion system; 701 - extruder; 702 - extrusion runner; 703 - extrusion die;

[0046] 100 - reinforcing wire; 200 - molten plastic sheet; 300 - reinforcing belt. Detailed implementation manners

[0047] The following describes in detail the specific implementation manners of the present invention with reference to the accompanying drawings. It should be understood that the specific implementation manners described herein are only for explaining and illustrating the present invention, and are not used to limit the present invention.

[0048] In the present invention, unless otherwise stated, the orientation terms such as "upper, lower, left, right" generally refer to the upper, lower, left, and right shown in the reference drawings; "inner, outer" refer to the inner and outer relative to the contour of each component itself. Since the production line of the reinforcing belt involves many equipment and processes, for the convenience of clear display, Figure 1 and Figure 2 and Figure 4 and Figure 5Part of a production line for an enhanced belt is shown from the front view and the top view respectively. Among them, Figure 1 and Figure 4 The upstream equipment shown in is placed upstream of the downstream equipment shown in Figure 2 and Figure 5 (that is, Figure 1 and Figure 2 , Figure 4 and Figure 5 should be connected at the positions where the double-dot dash lines are located respectively), and these equipments are usually arranged on the same straight line. In addition, Figure 3 and Figure 6 also respectively magnify and display the key parts in Figure 1 and Figure 4 .

[0049] Referring to Figures 1 to 6 shown, an aspect of the present utility model provides a production line for an enhanced belt, and the production line for the enhanced belt may include wire unwinding, wire combing system, vertical roll forming equipment 106, a cooling and shaping device for the enhanced belt 300, traction, cutting and winding equipment, etc. Specifically, the wire unwinding system may be set as a wire unwinding rack 101, and the wire unwinding rack 101 can unwind multiple strands of enhanced wire materials 100, such as steel cord, steel fiber, steel wire, etc. For this purpose, the wire unwinding rack 101 may have multiple wire spools 101a respectively wound with the enhanced wire materials 100 to be able to release multiple strands of enhanced wire materials 100 (single wires). When the enhanced wire materials 100 on the wire spools 101a are used up, new wire spools 101a can be replaced, or the wire spools 101a with different enhanced wire materials 100 can be replaced as a whole according to production needs.

[0050] The unwound enhanced wire materials 100 need to be combed into a regular arrangement in a predetermined manner, so that they can run through a wire collector 102, an inlet pressure roller 103, a leveling roller 104, a wire separating comb 105, etc. Among them, the wire collector 102 can gather multiple strands of enhanced wire materials 100 (single wires) unwound from the wire unwinding rack 101 into a bundle, and then the wire separating comb 105 combs these enhanced wire materials 100 into multiple rows arranged side by side, so as to be compounded with the extruded molten plastic sheet 200 into one body and formed into an enhanced belt 300 when passing through the vertical roll forming equipment 106 later. In order to arrange the enhanced wire materials 100 in the same plane at a predetermined interval, leveling rollers 104 are respectively arranged in front of and behind the wire separating comb 105 to support the enhanced wire materials 100, and the height position of the enhanced wire materials 100 when running through the wire separating comb 105 is restricted by the inlet pressure roller 103 and one of the subsequent turning rollers.

[0051] Then, the reinforcing filament 100 can be heat-treated and bonded to the extruded molten plastic sheet 200 in the vertical roll forming device 106 described in detail below to form a reinforcing strip 300. The reinforcing strip 300 roll-formed by the vertical roll forming device 106 has a relatively high temperature and thus needs to be further cooled and shaped.

[0052] For this purpose, the reinforcing strip 300 output by the vertical roll forming device 106 can be turned to run in the horizontal direction through the pressure roller device 107, and then pass through a cooling device such as a water-cooling tank 108 to completely cool and shape the reinforcing strip 300. Then, the reinforcing strip 300 is pulled by the tractor 110 to continue running backward. A plurality of air knife and other drying devices 109 can be provided downstream of the water-cooling tank 108 for drying the moisture on the surface of the reinforcing strip 300. Finally, the reinforcing strip 300 can be wound into a roll by the winding machine 112, and according to the winding specifications, the reinforcing strip 300 can be cut timely by the reinforcing strip cutting device 111.

[0053] Figures 1 to 3 In the figure, the running directions of the reinforcing filament 100 and the reinforcing strip 300 during the production process are marked with arrows A. It should be understood that the descriptions of various devices and production steps in the above-mentioned reinforcing strip production line are only for facilitating the overall understanding of the production principle of the reinforcing strip 300. The reinforcing strip production line of the present invention can add other functional components or change / omit some of the devices or components therein. Importantly, the reinforcing strip production line of the present invention adopts the vertical roll forming device 106 to implement a new roll forming process. Since the reinforcing filament 100 does not need to pass through the small holes of the core mold and abandons the traditional forming process of in-mold compounding, various problems caused by the reinforcing filament 100 passing through the small holes of the core mold and in-mold compounding can be avoided, ensuring the product quality and high production efficiency of the reinforcing strip 300. The vertical roll forming device 106 will be described in detail below.

[0054] Another aspect of the present utility model provides a vertical roll forming device 106 that can be used in the above-mentioned reinforcing tape production line, that is, a device for vertically roll forming a reinforcing tape, including a sheet extrusion system 70 and at least one set of roll pressing and compounding roll groups. Among them, the sheet extrusion system 70 has an extrusion die 703 and is arranged to be able to extrude molten plastic sheets 200 on both sides of multiple rows of reinforcing filaments 100 running side by side; the roll pressing and compounding roll groups include rolls 671 that are arranged in pairs and spaced apart from each other below the extrusion die 703. Thus, the sheet extrusion system 70 extrudes the molten plastic sheets 200 above the roll pressing and compounding roll groups. The molten plastic sheets 200 and the reinforcing filaments 100 therebetween enter between the rolls 671 arranged in pairs synchronously, so that the rolls 671 can roll the mutually facing sides of the molten plastic sheets 200, enabling the molten plastic sheets 200 extruded on both sides to be bonded together and fixing the multiple rows of reinforcing filaments 100 running side by side therebetween to form a reinforcing tape 300. For this purpose, a roll pressing gap for receiving the reinforcing filaments 100 and the molten plastic sheets 200 extruded on both sides thereof is defined between the rolls 671 arranged in pairs, and the roll pressing gap should not be less than the designed thickness of the reinforcing tape 300 to be produced.

[0055] Among them, the roll pressing gap is arranged to be able to receive the reinforcing filaments 100 running from top to bottom. Correspondingly, the extruded molten plastic sheets 200 also run from top to bottom when passing through the roll pressing gap. Thus, the molten plastic sheets 200 extruded on both sides of the reinforcing filaments 100 can have relatively good consistency under the action of gravity, which is beneficial to ensuring the product quality of the produced reinforcing tape 300.

[0056] The above-mentioned vertical roll forming device 106 adopted by the present utility model uses a hot pressing and compounding process when manufacturing the reinforcing tape, cancels the tape-making die for defining the compounding cavity and the in-mold compounding process in the traditional technology, extrudes the molten plastic sheets 200 on both sides of multiple rows of reinforcing filaments 100 running side by side through the sheet extrusion system 70, and uses at least one set of roll pressing and compounding roll groups to roll the molten plastic sheets 200 to make them compound and bond with the reinforcing filaments 100 into one body, so that the reinforcing tape 300 is roll formed, having a forming process completely different from the prior art. Since the reinforcing filaments do not need to run through the small holes of the core mold and the traditional forming process of in-mold compounding is abandoned, the problems of difficult to ensure product quality and production efficiency existing in the prior art can be avoided.

[0057] In particular, in the production process of traditional technologies, the reinforcing wire is generally arranged to run in the horizontal direction to avoid being bent, which is not conducive to improving production efficiency and controlling product quality. The present utility model breakthroughly provides a vertical roll forming device 106 adopting a brand-new process, and is arranged such that the reinforcing wire 100 runs from top to bottom at the position where it is compounded with the molten plastic sheet 200. The roll-compounding roll group is used to roll the molten plastic sheet 200 on both sides to realize the continuous roll forming of the reinforcing belt, which can better adapt to the material characteristics during compounding, is easy to control the tension of the reinforcing wire 100 and extrude the molten plastic sheet 200 suitable for compounding, not only significantly reduces the requirements for compounding process conditions, but also facilitates ensuring the product quality of the obtained reinforcing belt.

[0058] Among them, the paired rollers 671 can be arranged to be horizontally spaced from each other, and their respective roll shafts extend along the horizontal direction, and the reinforcing wire 100 vertically enters the rolling gap downward. Thus, the molten plastic sheets 200 on both sides can have good consistency under the action of gravity and be evenly rolled when passing through the rolling gap, ensuring the product quality of the produced reinforcing belt 300. In other embodiments, the running direction of the reinforcing wire 100 from top to bottom may also have a certain inclination angle relative to the vertical direction, as long as it does not cause the extruded molten plastic sheet 200 to undergo serious deformation before being basically shaped.

[0059] The vertical roll forming device 106 of the present utility model realizes the continuous roll forming of the reinforcing belt by rolling the molten plastic sheet 200 with the roll-compounding roll group, and it can be provided with one or more groups of roll-compounding roll groups. In the illustrated preferred embodiment, the vertical roll forming device 106 has three groups of roll-compounding roll groups arranged along the running direction of the reinforcing wire 100, namely the first group of roll-compounding roll group 67a at the uppermost part, the second group of roll-compounding roll group 67b at the middle height position, and the third group of roll-compounding roll group 67c at the lowermost part. Among them, since the reinforcing wire 100 runs vertically downward at this position, the above three groups of roll-compounding roll groups are arranged along the same vertical line.

[0060] When the reinforcing filament 100 and the molten plastic sheets 200 extruded on both sides thereof pass through the rolling gap of the first set of rolling composite rollers 67a, the molten plastic sheets 200 are rolled to bond to each other. At this time, the formed reinforcing belt has a relatively high temperature and has not been formed into a predetermined shape (especially thickness). The preliminarily formed reinforcing belt continues to pass through the second set of rolling composite rollers 67b and the third set of rolling composite rollers 67c and can be further precisely shaped. Thus, through multiple passes of rolling (and subsequent cooling as described), the reinforcing belt can be gradually formed into a predetermined designed thickness, so that the finally formed reinforcing belt 300 has a high product quality. For this purpose, the rolling gap formed by the upper rolling composite roller set can be set to be equal to or greater than the rolling gap formed by the lower rolling composite roller set. For example, the rolling gaps of the illustrated first set of rolling composite rollers 67a, the second set of rolling composite rollers 67b, and the third set of rolling composite rollers 67c can be set to decrease in sequence.

[0061] To achieve a good rolling effect, the rollers 671 in the rolling composite roller set are preferably arranged to be driven to rotate during the rolling process so as to roll relative to the surface of the molten plastic sheet 200. In particular, the rollers 671 of the first set of rolling composite rollers 67a should be actively rotated. For this purpose, a servo drive mechanism (such as a servo motor) transmission-connected to the roller 671 can be provided, and the servo drive motor can drive the roller 671 to rotate so as to roll the surface of the molten plastic sheet 200. Through this kind of rolling composite, air bubbles in the formed reinforcing belt 300 can be effectively prevented (the gas at the joint of the reinforcing filament 100 and the molten plastic sheet 200 is effectively extruded), so that the reinforcing filament 100 and the molten plastic sheet 200 are pressed tightly, ensuring good bonding quality.

[0062] Furthermore, an air cooling device 69 can be provided between adjacent rolling composite roller sets. The air cooling device 69 is arranged on both sides of the reinforcing belt 300 opposite to the belt surface. By blowing cooling air to the preliminarily rolled and formed reinforcing belt 300, the surface thereof is preliminarily cooled and shaped, and then further rolled by the next set of rolling composite rollers, realizing the step-by-step shaping and cooling of the reinforcing belt 300 and finally meeting the process thickness requirements.

[0063] According to the process requirements and product specifications, it may be necessary to adjust the rolling gap between the rollers 671 in the rolling composite roller set. For this purpose, the vertical rolling forming device 106 of the present utility model can be provided with a gap adjusting mechanism 68 for adjusting the rolling gap. The gap adjusting mechanism 68 can be set in various forms as long as it can adjust the interval between the paired rollers 671. Preferably, the gap adjusting mechanism 68 adopts a threaded lead screw transmission form and is driven by a servo motor to ensure the adjustment accuracy. As an alternative, it can also be set as a cylinder directly driving the roller 671 or manually adjusted by a handwheel.

[0064] The gap adjustment mechanism 68 is drivingly connected to one or two rollers 671 in the roll-bonding roller group. In one embodiment, the axis of one roller in the roll-bonding roller group is fixed, while the axis of the other roller is adjustable. Therefore, it is necessary to be drivingly connected to the gap adjustment mechanism 68 and be able to be driven to approach or move away from the fixed roller. In this way, the fixed roller can determine the reference plane of the composite position. When the roll-bonding gap needs to be adjusted, only one side of the roller needs to be adjusted, which is simple to operate and easy to control. In another embodiment, the axes of both rollers in the roll-bonding roller group can be adjusted to approach or move away from the running path of the reinforcing filament 100 synchronously. This can be achieved by means of a positive and reverse thread lead screw drive, etc. Thus, when the roll-bonding gap is adjusted, there is no need to correspondingly adjust the running path of the reinforcing filament 100 at this position.

[0065] Typically, referring to Figure 3 and Figure 6 as shown, the sheet extrusion system 70 for extruding the molten plastic sheet 200 may include two extruders 701 and the supporting extrusion channels 702 and extrusion dies 703. The extrusion channels 702 are used to convey the molten plastic to the extrusion dies 703 to extrude the required molten plastic sheet 200 at a predetermined position. For the convenience of debugging, the sheet extrusion system 70 can be set to be capable of three-dimensionally adjusting the position of the extrusion die 703, that is, the three directions of X, Y, and Z (i.e., the front-back, left-right, and up-down directions) indicated by the arrows in the figure.

[0066] In addition, the die orifice of the extrusion die 703 may be formed with a plurality of forming grooves (not shown) corresponding to the side-by-side running reinforcing filaments 100, such as using a grooved die or a grooved bar. This is beneficial to the matching of the extruded molten plastic sheet 200 and the reinforcing filaments 100, thereby further reducing the risk of gas entrapment.

[0067] As described above, before the reinforcing filament 100 runs to the roll pressing and compounding roll group, filament splitting and heating treatments are required to facilitate bonding with the molten plastic sheet 200 and ensure product quality. To this end, at least some components for filament splitting treatment and heating treatment can be integrally arranged on the vertical roll forming device 106. Therefore, along the running direction of the reinforcing filament, upstream of the first group of roll pressing and compounding roll groups 67a, a filament heating device for heating the reinforcing filament 100 and / or a filament splitting unit for splitting multiple strands of the reinforcing filament 100 into multiple rows running side by side at a predetermined interval can be provided. In the illustrated preferred embodiment, the main filament heating device for heating the reinforcing filament 100 is an oven 62 provided at the top of the frame 60. In addition, a hot roll 64 for heating / insulating the reinforcing filament 100 by means of hot water circulation or electric heating rods can be provided downstream thereof. The hot roll 64 also serves to turn the reinforcing filament 100 to run downward. The filament splitting unit includes a filament splitting roll 63 (a roll with a limiting groove formed on the outer peripheral surface) or other filament splitting components (such as a filament splitting comb) provided between the oven 62 and the hot roll 64.

[0068] In a preferred embodiment of the present utility model, along the running direction of the reinforcing filament 100, a filament heat preservation device 65 is further provided above the first group of roll pressing and compounding roll groups 67a to keep the surface temperature of the reinforcing filament 100 after heating before it runs into the roll pressing gap of the roll pressing and compounding roll group, so as to facilitate bonding with the molten plastic sheet 200. Among them, the filament heat preservation device 65 can define a heat preservation channel 65a extending along the running direction of the reinforcing filament 100, and the heat preservation channel 65a gradually expands and extends at one end facing the roll pressing and compounding roll group to form a hot temperature area at a position close to the roll pressing and compounding roll group, which can keep the inner sides of the reinforcing filament 100 and the molten plastic sheet 200 at a higher temperature at a position close to the joint, facilitating hot pressing and compounding between the two.

[0069] Although the reinforcing filament 100 has been split into multiple rows running side by side, it may still move in position due to vibration or the like during the process of running into the roll pressing gap of the roll pressing and compounding roll group, affecting the compounding quality. To this end, a filament combing device 66 can be provided in the above-mentioned hot temperature area. The filament combing device 66 is arranged adjacent to the first group of roll pressing and compounding roll groups 67a, and the reinforcing filament 100 extends through the comb teeth gaps of the filament combing device 66 and runs into the roll pressing gap of the first group of roll pressing and compounding roll groups 67a, so that the reinforcing filament 100 enters the roll pressing gap more stably, ensuring a higher compounding quality of the reinforcing belt.

[0070] The above-mentioned various functional components of the vertical roll forming device 106 can be installed on the frame 60, and a steering roll can also be provided on the frame 60 to change the running height of the reinforcing wire 100 and the obtained reinforcing belt 300. In the illustrated preferred embodiment, a first steering roll 61a, a second steering roll 61b, and a third steering roll 61c are installed on the frame 60. Among them, the reinforcing wire 100 is unrolled, concentrated into a bundle, and combed into multiple columns at a first height position, and then turns upward around the first steering roll 61a, and is lifted to a higher second height after bypassing the second steering roll 61b at the top of the frame 60, so as to facilitate running from top to bottom and compounding with the molten plastic sheet 200. The compounded reinforcing belt 300 can run around the third steering roll 61c to change the running direction after being output from the roll pressing and compounding roll group, and resume running at a relatively lower height level, facilitating subsequent cooling and shaping and traction and finishing processes.

[0071] Referring to Figure 7 As shown, on the other hand, the present invention also provides a roll forming method for a reinforcing belt and a production method for a reinforcing belt. The roll forming method for the reinforcing belt and the production method for the reinforcing belt can be implemented by using the aforementioned vertical roll forming device 106 and the reinforcing belt production line.

[0072] Specifically, the roll forming method for the reinforcing belt of the present invention includes the following steps:

[0073] S1. A wire splitting treatment step of splitting multiple strands of reinforcing wire 100 into multiple columns running side by side;

[0074] S2. A wire heating step of heating the multiple columns of reinforcing wire 100 running side by side;

[0075] S3. Making the heated multiple columns of reinforcing wire 100 run from top to bottom, and extruding molten plastic sheets 200 on both sides of the multiple columns of reinforcing wire 100 running side by side;

[0076] S4. A roll forming step of using at least one set of roll pressing and compounding roll groups to roll press the molten plastic sheet 200, so that the multiple columns of reinforcing wire 100 running side by side are bonded to the molten plastic sheets 200 on both sides thereof to form a reinforcing belt 300 by roll pressing.

[0077] The production method for the reinforcing belt of the present invention includes the following steps:

[0078] S100. Unrolling multiple strands of reinforcing wire 100;

[0079] S200. Forming a reinforcing belt 300 by using the above roll forming method for the reinforcing belt;

[0080] S300. A cooling and shaping step of cooling and shaping the roll formed reinforcing belt 300; and,

[0081] S400. Traction and winding steps are performed to wind the roll-formed reinforcing strip 300 into a roll.

[0082] Based on the various preferred embodiments of the foregoing vertical roll-forming device 106 and the reinforcing strip production line, the roll-forming method and the production method of the reinforcing strip of the present invention may have corresponding processing steps and advantages, which will not be elaborated herein.

[0083] The preferred embodiments of the present invention have been described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited thereto. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solutions of the present invention, including the combination of each specific technical feature in any suitable manner. To avoid unnecessary repetition, the present invention will not separately describe various possible combination methods. However, these simple modifications and combinations should also be regarded as the content disclosed by the present invention and all fall within the protection scope of the present invention.

Claims

1. An apparatus for vertically roll-forming a reinforcing belt, characterized in that, include: A sheet extrusion system (70) having an extrusion die (703) and configured to extrude molten plastic sheets (200) on both sides of a plurality of rows of reinforcing filaments (100) running side by side; and At least one group of rolled composite roller groups (67a, 67b, 67c), the rolled composite roller group (67a, 67b, 67c) comprising rollers (671) arranged in pairs below the extrusion die (703) and spaced apart from each other, a rolling gap being defined between the rollers (671) arranged in pairs for receiving the reinforcing filaments (100) running from top to bottom and the molten plastic sheets (200) extruded on both sides thereof, and being capable of rolling the molten plastic sheets (200) so that the multiple rows of reinforcing filaments (100) running side by side are bonded to the molten plastic sheets (200) on both sides thereof as a whole to form a reinforcing belt (300) by rolling.

2. The device for the vertical roll forming of the reinforcing belt according to claim 1, characterized in that, The equipment for vertical roller forming of reinforcing belt comprises a plurality of groups of the roller-pressed composite roller groups (67a, 67b, 67c) arranged along the running direction of the reinforcing wire material (100), wherein the roller-pressed gap formed by the roller-pressed composite roller group (67a, 67b, 67c) located above is equal to or greater than the roller-pressed gap formed by the roller-pressed composite roller group (67a, 67b, 67c) located below.

3. The device for vertically roll-forming the reinforcing belt according to claim 2, characterized in that, It also includes a servo drive mechanism, which is configured to at least be able to drive the roller (671) in the uppermost roller group (67a, 67b, 67c) to rotate.

4. The device for vertically roll-forming a reinforcing belt according to claim 2, characterized in that, An air cooling device (69) is provided between adjacent roll-pressed composite roller groups (67a, 67b, 67c), and the air cooling device (69) is arranged on two sides of the reinforcement belt (300) opposite to the belt surface.

5. The device for vertically roll-forming a reinforcing belt according to claim 1, characterized in that, The rollers (671) arranged in pairs are arranged horizontally at intervals from each other, and their respective roller axes extend in the horizontal direction, respectively, and the reinforcing wire material (100) enters the rolling gap vertically downward.

6. The device for vertically roll-forming a reinforcing belt according to claim 1, characterized in that, The rolling composite roller group (67a, 67b, 67c) also includes a gap adjustment mechanism (68) for adjusting the rolling gap between the rollers (671).

7. The device for a vertical roll forming reinforced belt according to claim 6, characterized in that, The gap adjustment mechanism (68) comprises a screw transmission mechanism which is transmission-connected to one or two of the rollers (671) in the rolled composite roller set (67a, 67b, 67c).

8. The equipment for the vertical roll forming reinforced belt according to claim 1, characterized in that, The sheet extrusion system (70) comprises an extruder (701) and an extrusion channel (702) for connecting the extruder (701) to the extrusion die (703), and is configured to be able to three-dimensionally adjust the position of the extrusion die (703).

9. The device for vertically roll-forming a reinforcing belt according to claim 1, characterized in that, The die of the extrusion die (703) is formed with a plurality of forming grooves corresponding to the plurality of rows of the reinforcing wire materials (100) running side by side.

10. The equipment for the vertical roll forming reinforced belt according to claim 1, characterized in that, Upstream of the first set of the roll-compounding roll sets (67a, 67b, 67c) along the running direction of the reinforcing wire (100), there is also provided a wire heating device for heating the reinforcing wire (100) and / or a wire splitting unit for splitting multiple strands of the reinforcing wire (100) into multiple rows running side by side at a predetermined spacing.

11. The equipment for the vertical roll forming reinforced belt according to claim 1, characterized in that, Above the first set of the roll-compounding roll sets (67a, 67b, 67c) along the running direction of the reinforcing wire (100), there is also provided a wire heat preservation device (65).

12. The device for vertically roll-forming a reinforcing belt according to claim 11, characterized in that, The wire heat preservation device (65) defines a heat preservation channel (65a) extending along the running direction of the reinforcing wire (100), and the heat preservation channel (65a) gradually expands and extends at one end facing the roll-compounding roll sets (67a, 67b, 67c) to form a heat and temperature region at a position adjacent to the roll-compounding roll sets (67a, 67b, 67c).

13. The device for the vertical roll forming reinforced belt according to claim 12, characterized in that, A wire combing device (66) is provided in the heat and temperature region, and the reinforcing wire (100) extends through the comb teeth gaps of the wire combing device (66).

14. The equipment for a vertical roll forming reinforced belt according to claim 1, characterized in that, The reinforcing belt roll forming device further includes a frame (60) and turning rolls (61a, 61b, 61c) mounted on the frame (60), wherein, The reinforcing wire (100) bypasses the turning rolls (61a, 61b, 61c) and extends to raise the running height before entering the roll-compounding roll sets (67a, 67b, 67c), and / or, The roll-formed reinforcing belt (300) bypasses the turning rolls (61a, 61b, 61c) and extends to change the running direction after being output from the roll-compounding roll sets (67a, 67b, 67c).

15. An enhanced belt production line, characterized in that, Comprising: A wire pay-off stand (101) for unwinding multiple strands of the reinforcing wire (100); A wire collector (102) for gathering the unwound multiple strands of the reinforcing wire (100) into a bundle; A wire splitting comb (105) for splitting the multiple strands of the reinforcing wire (100) gathered into a bundle into multiple rows arranged side by side; The device for vertically roll-forming a reinforcing belt according to any one of claims 1 to 14; A cooling and shaping device for cooling and shaping the reinforcing belt (300) roll-formed by the device for vertically roll-forming a reinforcing belt; A drying device (109) for drying the surface of the reinforcing belt (300); A tractor (110) for pulling the reinforcing belt (300); and, A winder (112) for winding the reinforcing belt (300).

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